21249926

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{307}}^1\times {\mathrm{653}}^1$

素因数の和:1015

約数の個数: 16

約数和(自身を含む): 32631984

約数和(自身を除く): 11382058

約数列:

[1, 2, 53, 106, 307, 614, 653, 1306, 16271, 32542, 34609, 69218, 200471, 400942, 10624963, 21249926]

約数ペア:

[(1, 21249926), (2, 10624963), (53, 400942), (106, 200471), (307, 69218), (614, 34609), (653, 32542), (1306, 16271)]